1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1983, 1993 5 * The Regents of the University of California. All rights reserved. 6 * (c) UNIX System Laboratories, Inc. 7 * All or some portions of this file are derived from material licensed 8 * to the University of California by American Telephone and Telegraph 9 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 10 * the permission of UNIX System Laboratories, Inc. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #include <sys/param.h> 38 #include <sys/file.h> 39 #include <sys/stat.h> 40 #include <sys/time.h> 41 42 #include <ufs/ufs/dinode.h> 43 #include <ufs/ufs/dir.h> 44 #include <protocols/dumprestore.h> 45 46 #include <err.h> 47 #include <errno.h> 48 #include <limits.h> 49 #include <paths.h> 50 #include <stdint.h> 51 #include <stdio.h> 52 #include <stdlib.h> 53 #include <string.h> 54 #include <unistd.h> 55 56 #include "restore.h" 57 #include "extern.h" 58 59 /* 60 * Symbol table of directories read from tape. 61 */ 62 #define HASHSIZE 1000 63 #define INOHASH(val) (val % HASHSIZE) 64 struct inotab { 65 struct inotab *t_next; 66 ino_t t_ino; 67 int32_t t_seekpt; 68 int32_t t_size; 69 }; 70 static struct inotab *inotab[HASHSIZE]; 71 72 /* 73 * Information retained about directories. 74 */ 75 struct modeinfo { 76 ino_t ino; 77 struct timespec ctimep[2]; 78 struct timespec mtimep[2]; 79 mode_t mode; 80 uid_t uid; 81 gid_t gid; 82 u_int flags; 83 int extsize; 84 }; 85 86 /* 87 * Definitions for library routines operating on directories. 88 */ 89 #undef DIRBLKSIZ 90 #define DIRBLKSIZ 1024 91 struct rstdirdesc { 92 int dd_fd; 93 int32_t dd_loc; 94 int32_t dd_size; 95 char dd_buf[DIRBLKSIZ]; 96 }; 97 98 /* 99 * Global variables for this file. 100 */ 101 static long seekpt; 102 static FILE *df, *mf; 103 static RST_DIR *dirp; 104 static char dirfile[MAXPATHLEN] = "#"; /* No file */ 105 static char modefile[MAXPATHLEN] = "#"; /* No file */ 106 static char dot[2] = "."; /* So it can be modified */ 107 108 static struct inotab *allocinotab(struct context *, long); 109 static void flushent(void); 110 static struct inotab *inotablookup(ino_t); 111 static RST_DIR *opendirfile(const char *); 112 static void putdir(char *, size_t); 113 static void putdirattrs(char *, size_t); 114 static void putent(struct direct *); 115 static void rst_seekdir(RST_DIR *, long, long); 116 static long rst_telldir(RST_DIR *); 117 static struct direct *searchdir(ino_t, char *); 118 static void fail_dirtmp(char *); 119 120 /* 121 * Extract directory contents, building up a directory structure 122 * on disk for extraction by name. 123 * If genmode is requested, save mode, owner, and times for all 124 * directories on the tape. 125 */ 126 void 127 extractdirs(int genmode) 128 { 129 struct inotab *itp; 130 struct direct nulldir; 131 int i, fd; 132 const char *tmpdir; 133 134 vprintf(stdout, "Extract directories from tape\n"); 135 if ((tmpdir = getenv("TMPDIR")) == NULL || tmpdir[0] == '\0') 136 tmpdir = _PATH_TMP; 137 (void) snprintf(dirfile, sizeof(dirfile), "%s/rstdir%jd", tmpdir, 138 (intmax_t)dumpdate); 139 if (command != 'r' && command != 'R') { 140 (void) strcat(dirfile, "-XXXXXX"); 141 fd = mkstemp(dirfile); 142 } else 143 fd = open(dirfile, O_RDWR|O_CREAT|O_EXCL, 0666); 144 if (fd == -1 || (df = fdopen(fd, "w")) == NULL) { 145 if (fd != -1) 146 close(fd); 147 warn("%s: cannot create directory database", dirfile); 148 done(1); 149 } 150 if (genmode != 0) { 151 (void) snprintf(modefile, sizeof(modefile), "%s/rstmode%jd", 152 tmpdir, (intmax_t)dumpdate); 153 if (command != 'r' && command != 'R') { 154 (void) strcat(modefile, "-XXXXXX"); 155 fd = mkstemp(modefile); 156 } else 157 fd = open(modefile, O_RDWR|O_CREAT|O_EXCL, 0666); 158 if (fd == -1 || (mf = fdopen(fd, "w")) == NULL) { 159 if (fd != -1) 160 close(fd); 161 warn("%s: cannot create modefile", modefile); 162 done(1); 163 } 164 } 165 nulldir.d_ino = 0; 166 nulldir.d_type = DT_DIR; 167 nulldir.d_namlen = 1; 168 (void) strcpy(nulldir.d_name, "/"); 169 nulldir.d_reclen = DIRSIZ(0, &nulldir); 170 for (;;) { 171 curfile.name = "<directory file - name unknown>"; 172 curfile.action = USING; 173 if (curfile.mode == 0 || (curfile.mode & IFMT) != IFDIR) 174 break; 175 itp = allocinotab(&curfile, seekpt); 176 getfile(putdir, putdirattrs, xtrnull); 177 putent(&nulldir); 178 flushent(); 179 itp->t_size = seekpt - itp->t_seekpt; 180 } 181 if (fclose(df) != 0) 182 fail_dirtmp(dirfile); 183 dirp = opendirfile(dirfile); 184 if (dirp == NULL) 185 fprintf(stderr, "opendirfile: %s\n", strerror(errno)); 186 if (mf != NULL && fclose(mf) != 0) 187 fail_dirtmp(modefile); 188 i = dirlookup(dot); 189 if (i == 0) 190 panic("Root directory is not on tape\n"); 191 } 192 193 /* 194 * skip over all the directories on the tape 195 */ 196 void 197 skipdirs(void) 198 { 199 200 while (curfile.ino && (curfile.mode & IFMT) == IFDIR) { 201 skipfile(); 202 } 203 } 204 205 /* 206 * Recursively find names and inumbers of all files in subtree 207 * pname and pass them off to be processed. 208 */ 209 void 210 treescan(char *pname, ino_t ino, long (*todo)(char *, ino_t, int)) 211 { 212 struct inotab *itp; 213 struct direct *dp; 214 int namelen; 215 long bpt; 216 char locname[MAXPATHLEN]; 217 218 itp = inotablookup(ino); 219 if (itp == NULL) { 220 /* 221 * Pname is name of a simple file or an unchanged directory. 222 */ 223 (void) (*todo)(pname, ino, LEAF); 224 return; 225 } 226 /* 227 * Pname is a dumped directory name. 228 */ 229 if ((*todo)(pname, ino, NODE) == FAIL) 230 return; 231 /* 232 * begin search through the directory 233 * skipping over "." and ".." 234 */ 235 (void) strlcpy(locname, pname, sizeof(locname)); 236 (void) strlcat(locname, "/", sizeof(locname)); 237 namelen = strlen(locname); 238 rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt); 239 dp = rst_readdir(dirp); /* "." */ 240 if (dp != NULL && strcmp(dp->d_name, ".") == 0) 241 dp = rst_readdir(dirp); /* ".." */ 242 else 243 fprintf(stderr, "Warning: `.' missing from directory %s\n", 244 pname); 245 if (dp != NULL && strcmp(dp->d_name, "..") == 0) 246 dp = rst_readdir(dirp); /* first real entry */ 247 else 248 fprintf(stderr, "Warning: `..' missing from directory %s\n", 249 pname); 250 bpt = rst_telldir(dirp); 251 /* 252 * a zero inode signals end of directory 253 */ 254 while (dp != NULL) { 255 locname[namelen] = '\0'; 256 if (namelen + dp->d_namlen >= sizeof(locname)) { 257 fprintf(stderr, "%s%s: name exceeds %zu char\n", 258 locname, dp->d_name, sizeof(locname) - 1); 259 } else { 260 (void)strlcat(locname, dp->d_name, sizeof(locname)); 261 treescan(locname, dp->d_ino, todo); 262 rst_seekdir(dirp, bpt, itp->t_seekpt); 263 } 264 dp = rst_readdir(dirp); 265 bpt = rst_telldir(dirp); 266 } 267 } 268 269 /* 270 * Lookup a pathname which is always assumed to start from the UFS_ROOTINO. 271 */ 272 struct direct * 273 pathsearch(const char *pathname) 274 { 275 ino_t ino; 276 struct direct *dp; 277 char *path, *name, buffer[MAXPATHLEN]; 278 279 strcpy(buffer, pathname); 280 path = buffer; 281 ino = UFS_ROOTINO; 282 while (*path == '/') 283 path++; 284 dp = NULL; 285 while ((name = strsep(&path, "/")) != NULL && *name != '\0') { 286 if ((dp = searchdir(ino, name)) == NULL) 287 return (NULL); 288 ino = dp->d_ino; 289 } 290 return (dp); 291 } 292 293 /* 294 * Lookup the requested name in directory inum. 295 * Return its inode number if found, zero if it does not exist. 296 */ 297 static struct direct * 298 searchdir(ino_t inum, char *name) 299 { 300 struct direct *dp; 301 struct inotab *itp; 302 int len; 303 304 itp = inotablookup(inum); 305 if (itp == NULL) 306 return (NULL); 307 rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt); 308 len = strlen(name); 309 do { 310 dp = rst_readdir(dirp); 311 if (dp == NULL) 312 return (NULL); 313 } while (dp->d_namlen != len || strncmp(dp->d_name, name, len) != 0); 314 return (dp); 315 } 316 317 /* 318 * Put the directory entries in the directory file 319 */ 320 static void 321 putdir(char *buf, size_t size) 322 { 323 struct direct *dp; 324 size_t loc, i; 325 326 for (loc = 0; loc < size; ) { 327 dp = (struct direct *)(buf + loc); 328 if (Bcvt) 329 swabst((u_char *)"ls", (u_char *) dp); 330 if (oldinofmt && dp->d_ino != 0) { 331 #if BYTE_ORDER == BIG_ENDIAN 332 if (Bcvt) 333 dp->d_namlen = dp->d_type; 334 #else 335 if (!Bcvt && dp->d_namlen == 0) 336 dp->d_namlen = dp->d_type; 337 #endif 338 dp->d_type = DT_UNKNOWN; 339 } 340 i = DIRBLKSIZ - (loc & (DIRBLKSIZ - 1)); 341 if ((dp->d_reclen & 0x3) != 0 || 342 dp->d_reclen > i || 343 dp->d_reclen < DIRSIZ(0, dp) 344 #if NAME_MAX < 255 345 || dp->d_namlen > NAME_MAX 346 #endif 347 ) { 348 vprintf(stdout, "Mangled directory: "); 349 if ((dp->d_reclen & 0x3) != 0) 350 vprintf(stdout, 351 "reclen not multiple of 4 "); 352 if (dp->d_reclen < DIRSIZ(0, dp)) 353 vprintf(stdout, 354 "reclen less than DIRSIZ (%u < %zu) ", 355 dp->d_reclen, DIRSIZ(0, dp)); 356 #if NAME_MAX < 255 357 if (dp->d_namlen > NAME_MAX) 358 vprintf(stdout, 359 "reclen name too big (%u > %u) ", 360 dp->d_namlen, NAME_MAX); 361 #endif 362 vprintf(stdout, "\n"); 363 loc += i; 364 continue; 365 } 366 loc += dp->d_reclen; 367 if (dp->d_ino != 0) { 368 putent(dp); 369 } 370 } 371 } 372 373 /* 374 * These variables are "local" to the following two functions. 375 */ 376 char dirbuf[DIRBLKSIZ]; 377 long dirloc = 0; 378 long prev = 0; 379 380 /* 381 * add a new directory entry to a file. 382 */ 383 static void 384 putent(struct direct *dp) 385 { 386 dp->d_reclen = DIRSIZ(0, dp); 387 if (dirloc + dp->d_reclen > DIRBLKSIZ) { 388 ((struct direct *)(dirbuf + prev))->d_reclen = 389 DIRBLKSIZ - prev; 390 if (fwrite(dirbuf, DIRBLKSIZ, 1, df) != 1) 391 fail_dirtmp(dirfile); 392 dirloc = 0; 393 } 394 memmove(dirbuf + dirloc, dp, (long)dp->d_reclen); 395 prev = dirloc; 396 dirloc += dp->d_reclen; 397 } 398 399 /* 400 * flush out a directory that is finished. 401 */ 402 static void 403 flushent(void) 404 { 405 ((struct direct *)(dirbuf + prev))->d_reclen = DIRBLKSIZ - prev; 406 if (fwrite(dirbuf, (int)dirloc, 1, df) != 1) 407 fail_dirtmp(dirfile); 408 seekpt = ftell(df); 409 dirloc = 0; 410 } 411 412 /* 413 * Save extended attributes for a directory entry to a file. 414 */ 415 static void 416 putdirattrs(char *buf, size_t size) 417 { 418 419 if (mf != NULL && fwrite(buf, size, 1, mf) != 1) 420 fail_dirtmp(modefile); 421 } 422 423 /* 424 * Seek to an entry in a directory. 425 * Only values returned by rst_telldir should be passed to rst_seekdir. 426 * This routine handles many directories in a single file. 427 * It takes the base of the directory in the file, plus 428 * the desired seek offset into it. 429 */ 430 static void 431 rst_seekdir(RST_DIR *dirp, long loc, long base) 432 { 433 434 if (loc == rst_telldir(dirp)) 435 return; 436 loc -= base; 437 if (loc < 0) 438 fprintf(stderr, "bad seek pointer to rst_seekdir %ld\n", loc); 439 (void) lseek(dirp->dd_fd, base + rounddown2(loc, DIRBLKSIZ), SEEK_SET); 440 dirp->dd_loc = loc & (DIRBLKSIZ - 1); 441 if (dirp->dd_loc != 0) 442 dirp->dd_size = read(dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ); 443 } 444 445 /* 446 * get next entry in a directory. 447 */ 448 struct direct * 449 rst_readdir(RST_DIR *dirp) 450 { 451 struct direct *dp; 452 453 for (;;) { 454 if (dirp->dd_loc == 0) { 455 dirp->dd_size = read(dirp->dd_fd, dirp->dd_buf, 456 DIRBLKSIZ); 457 if (dirp->dd_size <= 0) { 458 dprintf(stderr, "error reading directory\n"); 459 return (NULL); 460 } 461 } 462 if (dirp->dd_loc >= dirp->dd_size) { 463 dirp->dd_loc = 0; 464 continue; 465 } 466 dp = (struct direct *)(dirp->dd_buf + dirp->dd_loc); 467 if (dp->d_reclen == 0 || 468 dp->d_reclen > DIRBLKSIZ + 1 - dirp->dd_loc) { 469 dprintf(stderr, "corrupted directory: bad reclen %d\n", 470 dp->d_reclen); 471 return (NULL); 472 } 473 dirp->dd_loc += dp->d_reclen; 474 if (dp->d_ino == 0 && strcmp(dp->d_name, "/") == 0) 475 return (NULL); 476 if (dp->d_ino >= maxino) { 477 dprintf(stderr, "corrupted directory: bad inum %d\n", 478 dp->d_ino); 479 continue; 480 } 481 return (dp); 482 } 483 } 484 485 /* 486 * Simulate the opening of a directory 487 */ 488 void * 489 rst_opendir(const char *name) 490 { 491 struct inotab *itp; 492 RST_DIR *dirp; 493 ino_t ino; 494 495 if ((ino = dirlookup(name)) > 0 && 496 (itp = inotablookup(ino)) != NULL) { 497 dirp = opendirfile(dirfile); 498 rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt); 499 return (dirp); 500 } 501 return (NULL); 502 } 503 504 /* 505 * In our case, there is nothing to do when closing a directory. 506 */ 507 void 508 rst_closedir(void *arg) 509 { 510 RST_DIR *dirp; 511 512 dirp = arg; 513 (void)close(dirp->dd_fd); 514 free(dirp); 515 return; 516 } 517 518 /* 519 * Simulate finding the current offset in the directory. 520 */ 521 static long 522 rst_telldir(RST_DIR *dirp) 523 { 524 return ((long)lseek(dirp->dd_fd, 525 (off_t)0, SEEK_CUR) - dirp->dd_size + dirp->dd_loc); 526 } 527 528 /* 529 * Open a directory file. 530 */ 531 static RST_DIR * 532 opendirfile(const char *name) 533 { 534 RST_DIR *dirp; 535 int fd; 536 537 if ((fd = open(name, O_RDONLY)) == -1) 538 return (NULL); 539 if ((dirp = malloc(sizeof(RST_DIR))) == NULL) { 540 (void)close(fd); 541 return (NULL); 542 } 543 dirp->dd_fd = fd; 544 dirp->dd_loc = 0; 545 return (dirp); 546 } 547 548 /* 549 * Set the mode, owner, and times for all new or changed directories 550 */ 551 void 552 setdirmodes(int flags) 553 { 554 FILE *mf; 555 struct modeinfo node; 556 struct entry *ep; 557 char *cp, *buf; 558 const char *tmpdir; 559 int bufsize; 560 uid_t myuid; 561 562 vprintf(stdout, "Set directory mode, owner, and times.\n"); 563 if ((tmpdir = getenv("TMPDIR")) == NULL || tmpdir[0] == '\0') 564 tmpdir = _PATH_TMP; 565 if (command == 'r' || command == 'R') 566 (void) snprintf(modefile, sizeof(modefile), "%s/rstmode%jd", 567 tmpdir, (intmax_t)dumpdate); 568 if (modefile[0] == '#') { 569 panic("modefile not defined\n"); 570 fprintf(stderr, "directory mode, owner, and times not set\n"); 571 return; 572 } 573 mf = fopen(modefile, "r"); 574 if (mf == NULL) { 575 fprintf(stderr, "fopen: %s\n", strerror(errno)); 576 fprintf(stderr, "cannot open mode file %s\n", modefile); 577 fprintf(stderr, "directory mode, owner, and times not set\n"); 578 return; 579 } 580 clearerr(mf); 581 bufsize = 0; 582 myuid = getuid(); 583 for (;;) { 584 (void) fread((char *)&node, 1, sizeof(struct modeinfo), mf); 585 if (ferror(mf)) { 586 warn("%s: cannot read modefile.", modefile); 587 fprintf(stderr, "Mode, owner, and times not set.\n"); 588 break; 589 } 590 if (feof(mf)) 591 break; 592 if (node.extsize > 0) { 593 if (bufsize < node.extsize) { 594 if (bufsize > 0) 595 free(buf); 596 if ((buf = malloc(node.extsize)) != NULL) { 597 bufsize = node.extsize; 598 } else { 599 bufsize = 0; 600 } 601 } 602 if (bufsize >= node.extsize) { 603 (void) fread(buf, 1, node.extsize, mf); 604 if (ferror(mf)) { 605 warn("%s: cannot read modefile.", 606 modefile); 607 fprintf(stderr, "Not all external "); 608 fprintf(stderr, "attributes set.\n"); 609 break; 610 } 611 } else { 612 (void) fseek(mf, node.extsize, SEEK_CUR); 613 if (ferror(mf)) { 614 warn("%s: cannot seek in modefile.", 615 modefile); 616 fprintf(stderr, "Not all directory "); 617 fprintf(stderr, "attributes set.\n"); 618 break; 619 } 620 } 621 } 622 ep = lookupino(node.ino); 623 if (command == 'i' || command == 'x') { 624 if (ep == NULL) 625 continue; 626 if ((flags & FORCE) == 0 && ep->e_flags & EXISTED) { 627 ep->e_flags &= ~NEW; 628 continue; 629 } 630 if (node.ino == UFS_ROOTINO && 631 reply("set owner/mode for '.'") == FAIL) 632 continue; 633 } 634 if (ep == NULL) { 635 panic("cannot find directory inode %ju\n", 636 (uintmax_t)node.ino); 637 continue; 638 } 639 cp = myname(ep); 640 if (!Nflag) { 641 if (myuid != 0) 642 (void) chown(cp, myuid, node.gid); 643 else 644 (void) chown(cp, node.uid, node.gid); 645 (void) chmod(cp, node.mode); 646 if (node.extsize > 0) { 647 if (bufsize >= node.extsize) { 648 set_extattr(-1, cp, buf, node.extsize, SXA_FILE); 649 } else { 650 fprintf(stderr, "Cannot restore %s%s\n", 651 "extended attributes for ", cp); 652 } 653 } 654 utimensat(AT_FDCWD, cp, node.ctimep, 0); 655 utimensat(AT_FDCWD, cp, node.mtimep, 0); 656 (void) chflags(cp, node.flags); 657 } 658 ep->e_flags &= ~NEW; 659 } 660 if (bufsize > 0) 661 free(buf); 662 (void) fclose(mf); 663 } 664 665 /* 666 * Generate a literal copy of a directory. 667 */ 668 int 669 genliteraldir(char *name, ino_t ino) 670 { 671 struct inotab *itp; 672 int ofile, dp, i, size; 673 char buf[BUFSIZ]; 674 675 itp = inotablookup(ino); 676 if (itp == NULL) 677 panic("Cannot find directory inode %ju named %s\n", 678 (uintmax_t)ino, name); 679 if ((ofile = open(name, O_WRONLY | O_CREAT | O_TRUNC, 0666)) < 0) { 680 fprintf(stderr, "%s: ", name); 681 (void) fflush(stderr); 682 fprintf(stderr, "cannot create file: %s\n", strerror(errno)); 683 return (FAIL); 684 } 685 rst_seekdir(dirp, itp->t_seekpt, itp->t_seekpt); 686 dp = dup(dirp->dd_fd); 687 for (i = itp->t_size; i > 0; i -= BUFSIZ) { 688 size = MIN(i, BUFSIZ); 689 if (read(dp, buf, (int) size) == -1) { 690 fprintf(stderr, 691 "write error extracting inode %ju, name %s\n", 692 (uintmax_t)curfile.ino, curfile.name); 693 fprintf(stderr, "read: %s\n", strerror(errno)); 694 done(1); 695 } 696 if (!Nflag && write(ofile, buf, (int) size) == -1) { 697 fprintf(stderr, 698 "write error extracting inode %ju, name %s\n", 699 (uintmax_t)curfile.ino, curfile.name); 700 fprintf(stderr, "write: %s\n", strerror(errno)); 701 done(1); 702 } 703 } 704 (void) close(dp); 705 (void) close(ofile); 706 return (GOOD); 707 } 708 709 /* 710 * Determine the type of an inode 711 */ 712 int 713 inodetype(ino_t ino) 714 { 715 struct inotab *itp; 716 717 itp = inotablookup(ino); 718 if (itp == NULL) 719 return (LEAF); 720 return (NODE); 721 } 722 723 /* 724 * Allocate and initialize a directory inode entry. 725 * If requested, save its pertinent mode, owner, and time info. 726 */ 727 static struct inotab * 728 allocinotab(struct context *ctxp, long seekpt) 729 { 730 struct inotab *itp; 731 struct modeinfo node; 732 733 itp = calloc(1, sizeof(struct inotab)); 734 if (itp == NULL) 735 panic("no memory for directory table\n"); 736 itp->t_next = inotab[INOHASH(ctxp->ino)]; 737 inotab[INOHASH(ctxp->ino)] = itp; 738 itp->t_ino = ctxp->ino; 739 itp->t_seekpt = seekpt; 740 if (mf == NULL) 741 return (itp); 742 node.ino = ctxp->ino; 743 node.mtimep[0].tv_sec = ctxp->atime_sec; 744 node.mtimep[0].tv_nsec = ctxp->atime_nsec; 745 node.mtimep[1].tv_sec = ctxp->mtime_sec; 746 node.mtimep[1].tv_nsec = ctxp->mtime_nsec; 747 node.ctimep[0].tv_sec = ctxp->atime_sec; 748 node.ctimep[0].tv_nsec = ctxp->atime_nsec; 749 node.ctimep[1].tv_sec = ctxp->birthtime_sec; 750 node.ctimep[1].tv_nsec = ctxp->birthtime_nsec; 751 node.extsize = ctxp->extsize; 752 node.mode = ctxp->mode; 753 node.flags = ctxp->file_flags; 754 node.uid = ctxp->uid; 755 node.gid = ctxp->gid; 756 if (fwrite((char *)&node, sizeof(struct modeinfo), 1, mf) != 1) 757 fail_dirtmp(modefile); 758 return (itp); 759 } 760 761 /* 762 * Look up an inode in the table of directories 763 */ 764 static struct inotab * 765 inotablookup(ino_t ino) 766 { 767 struct inotab *itp; 768 769 for (itp = inotab[INOHASH(ino)]; itp != NULL; itp = itp->t_next) 770 if (itp->t_ino == ino) 771 return (itp); 772 return (NULL); 773 } 774 775 /* 776 * Clean up and exit 777 */ 778 void 779 done(int exitcode) 780 { 781 782 closemt(); 783 if (modefile[0] != '#') { 784 (void) truncate(modefile, 0); 785 (void) unlink(modefile); 786 } 787 if (dirfile[0] != '#') { 788 (void) truncate(dirfile, 0); 789 (void) unlink(dirfile); 790 } 791 exit(exitcode); 792 } 793 794 /* 795 * Print out information about the failure to save directory, 796 * extended attribute, and mode information. 797 */ 798 static void 799 fail_dirtmp(char *filename) 800 { 801 const char *tmpdir; 802 803 warn("%s: cannot write directory database", filename); 804 if (errno == ENOSPC) { 805 if ((tmpdir = getenv("TMPDIR")) == NULL || tmpdir[0] == '\0') 806 tmpdir = _PATH_TMP; 807 fprintf(stderr, "Try making space in %s, %s\n%s\n", tmpdir, 808 "or set environment variable TMPDIR", 809 "to an alternate location with more disk space."); 810 } 811 done(1); 812 } 813